I'm about at my wit's end trying to figure out why I can sign and notarize code, but am unable to staple the notarization, no matter what I do. I've reinstalled Xcode, reinstalled certificates, and tried about every suggestion that I can find, but still no luck. 2023 M3 MacBook Pro, OS X 15.3.1, Xcode 16.2. I have created a very basic Xcode app to test this with. I am building the project: codegen generate && xcodebuild -project SimpleNotarizationTest.xcodeproj -scheme SimpleNotarizationTest -configuration Release clean build (see attached file for build log) build-log.txt The signature and entitlements verify: codesign -d --entitlements :- ~/Library/Developer/Xcode/DerivedData/SimpleNotarizationTest-*/Build/Products/Release/SimpleNotarizationTest.app Output: Executable=/Users/minter/Library/Developer/Xcode/DerivedData/SimpleNotarizationTest-ecqihdiubptfnldimmjgnqpjr xun/Build/Products/Release/SimpleNotarizationTest.app/Contents/MacOS/SimpleNotarizationTest warning: Specifying ':' in the path is deprecated and will not work in a future release <?xml version="1.0" encoding="UTF-8"?><!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "https://www.apple .com/DTDs/PropertyList-1.0.dtd"><plist version="1.0"><dict><key>com.apple.security.app-sandbox</key><true/><k ey>com.apple.security.files.user-selected.read-only</key><true/></dict></plist> I created a zip file: ditto -c -k --keepParent ~/Library/Developer/Xcode/DerivedData/SimpleNotarizationTest-*/Build/Products/Release/SimpleNotarizationTest.app SimpleNotarizationTest.zip I submitted the app for notarization and it was approved: xcrun notarytool submit SimpleNotarizationTest.zip --apple-id "$APPLE_ID" --password "$APPLE_APP_SPECIFIC_PASSWORD" --team-id "$APPLE_TEAM_ID" --wait Output: Conducting pre-submission checks for SimpleNotarizationTest.zip and initiating connection to the Apple notary service... Submission ID received id: d2c0d6b0-cd55-4fa6-b958-09767d562a33 Upload progress: 100.00% (23.6 KB of 23.6 KB) Successfully uploaded file id: d2c0d6b0-cd55-4fa6-b958-09767d562a33 path: /Users/minter/tmp/simple-app-stapling/SimpleNotarizationTest.zip Waiting for processing to complete. Current status: Accepted......... Processing complete id: d2c0d6b0-cd55-4fa6-b958-09767d562a33 status: Accepted I attempt to staple the app: xcrun stapler staple -v ~/Library/Developer/Xcode/DerivedData/SimpleNotarizationTest-*/Build/Products/Release/SimpleNotarizationTest.app And it fails. See verbose stapling log. verbose-stapling-log.txt The top line is that it finds and downloads the ticket, but can't/won't staple. Downloaded ticket has been stored at file:///var/folders/dd/cgm9_v3n399_zqqsphgzs5jh0000gn/T/1b7cb7d8-9a9e-462c-831b-09de1b896d9e.ticket. Could not validate ticket for /Users/minter/Library/Developer/Xcode/DerivedData/SimpleNotarizationTest-ecqihdiubptfnldimmjgnqpjrxun/Build/Products/Release/SimpleNotarizationTest.app The staple and validate action failed! Error 65. Wade-Minter~/tmp/simple-app-stapling(:|✔) % From my debugging, I can say: The code signature appears valid and includes a secure timestamp from Feb 23, 2025 The app is properly signed with Developer ID Application The notarization ticket is being successfully retrieved from Apple's servers (as shown in the verbose output) The ticket is being downloaded to a temporary location, but the stapler is failing to validate it with error 65 The app bundle structure appears complete with all required components The CDHash matches between the code signature and the notarization ticket: 604544b32d7074dd77e2e6f2070f6e2d41f6368d If I run: spctl -a -vv ~/Library/Developer/Xcode/DerivedData/SimpleNotarizationTest-*/Build/Products/Release/SimpleNotarizationTest.app The output is: Wade-Minter~/tmp/simple-app-stapling(:|✔) % spctl -a -vv ~/Library/Developer/Xcode/DerivedData/SimpleNotarizationTest-*/Build/Products/Release/SimpleNotaspctlionTest.app /Users/minter/Library/Developer/Xcode/DerivedData/SimpleNotarizationTest-ecqihdiubptfnldimmjgnqpjrxun/Build/Products/Release/SimpleNotarizationTest.app: rejected source=Unnotarized Developer ID origin=Developer ID Application: Fourth Line LLC (6U2KJ5KDT4) To summarize: The app is being recognized as "Unnotarized Developer ID" despite successful notarization The stapler is able to retrieve the ticket but fails during validation The error code 65 consistently appears during stapling attempts All code signing and bundle integrity checks pass The notarization ticket is being successfully downloaded but not successfully attached Any insight will be appreciated, since I've exhausted every option that I can find.